Liquid-induced heat treatment strategy for eliminating anisotropy of IN718 fabricated by laser powder bed fusion
The laser-based additive manufacturing process often results in highly textured columnar grain structures along the build direction, leading to undesirable anisotropic mechanical properties in most industrial applications. Tailored heat treatments are currently the predominant approach to address an...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | Additive Manufacturing Letters |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772369024000707 |
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| author | Zhuoyu Li Xiaogang Hu Fan Zhou Zhifang Shi Zhiwei Lyu Zhen Xu Yu Li Xin Zhao Hongxing Lu Qiang Zhu |
| author_facet | Zhuoyu Li Xiaogang Hu Fan Zhou Zhifang Shi Zhiwei Lyu Zhen Xu Yu Li Xin Zhao Hongxing Lu Qiang Zhu |
| author_sort | Zhuoyu Li |
| collection | DOAJ |
| description | The laser-based additive manufacturing process often results in highly textured columnar grain structures along the build direction, leading to undesirable anisotropic mechanical properties in most industrial applications. Tailored heat treatments are currently the predominant approach to address anisotropy issues. However, the lack of driving force for recrystallization during the post-heat treatment within laser powder bed fusion (LPBF) makes this method inapplicable to the process. Here, we develop a novel liquid-induced heat treatment (LIHT) post-processing. The intergranular liquid film is introduced to facilitate the columnar-to-equiaxed transition of grains in IN718 alloy fabricated by LPBF. Microstructures and mechanical properties parallel and perpendicular to the build direction have been analyzed. The degree of anisotropy in ultimate strength was reduced from 21.1% to 3.5%. The anisotropy in creep performance also decreased from 52.1% to 11.3%. LIHT is anticipated to be a typical process for eliminating the anisotropy in the mechanical properties of metallic components. |
| format | Article |
| id | doaj-art-f097039d699349728ee2296e9f56f31c |
| institution | Kabale University |
| issn | 2772-3690 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Additive Manufacturing Letters |
| spelling | doaj-art-f097039d699349728ee2296e9f56f31c2025-01-17T04:52:27ZengElsevierAdditive Manufacturing Letters2772-36902025-02-0112100262Liquid-induced heat treatment strategy for eliminating anisotropy of IN718 fabricated by laser powder bed fusionZhuoyu Li0Xiaogang Hu1Fan Zhou2Zhifang Shi3Zhiwei Lyu4Zhen Xu5Yu Li6Xin Zhao7Hongxing Lu8Qiang Zhu9Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China; Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials, Shenzhen 518055, ChinaShenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials, Shenzhen 518055, China; School of Advanced Manufacturing, Sun Yat-Sen University, Shenzhen 518107, China; Corresponding authors at: Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials, Shenzhen 518055, China.Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials, Shenzhen 518055, ChinaDepartment of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaShenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials, Shenzhen 518055, ChinaShenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials, Shenzhen 518055, ChinaDepartment of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaShenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials, Shenzhen 518055, ChinaDepartment of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China; Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials, Shenzhen 518055, China; Corresponding authors at: Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials, Shenzhen 518055, China.The laser-based additive manufacturing process often results in highly textured columnar grain structures along the build direction, leading to undesirable anisotropic mechanical properties in most industrial applications. Tailored heat treatments are currently the predominant approach to address anisotropy issues. However, the lack of driving force for recrystallization during the post-heat treatment within laser powder bed fusion (LPBF) makes this method inapplicable to the process. Here, we develop a novel liquid-induced heat treatment (LIHT) post-processing. The intergranular liquid film is introduced to facilitate the columnar-to-equiaxed transition of grains in IN718 alloy fabricated by LPBF. Microstructures and mechanical properties parallel and perpendicular to the build direction have been analyzed. The degree of anisotropy in ultimate strength was reduced from 21.1% to 3.5%. The anisotropy in creep performance also decreased from 52.1% to 11.3%. LIHT is anticipated to be a typical process for eliminating the anisotropy in the mechanical properties of metallic components.http://www.sciencedirect.com/science/article/pii/S2772369024000707Liquid-induced heat treatmentAnisotropic propertyNickel-based superalloyLaser powder bed fusion |
| spellingShingle | Zhuoyu Li Xiaogang Hu Fan Zhou Zhifang Shi Zhiwei Lyu Zhen Xu Yu Li Xin Zhao Hongxing Lu Qiang Zhu Liquid-induced heat treatment strategy for eliminating anisotropy of IN718 fabricated by laser powder bed fusion Additive Manufacturing Letters Liquid-induced heat treatment Anisotropic property Nickel-based superalloy Laser powder bed fusion |
| title | Liquid-induced heat treatment strategy for eliminating anisotropy of IN718 fabricated by laser powder bed fusion |
| title_full | Liquid-induced heat treatment strategy for eliminating anisotropy of IN718 fabricated by laser powder bed fusion |
| title_fullStr | Liquid-induced heat treatment strategy for eliminating anisotropy of IN718 fabricated by laser powder bed fusion |
| title_full_unstemmed | Liquid-induced heat treatment strategy for eliminating anisotropy of IN718 fabricated by laser powder bed fusion |
| title_short | Liquid-induced heat treatment strategy for eliminating anisotropy of IN718 fabricated by laser powder bed fusion |
| title_sort | liquid induced heat treatment strategy for eliminating anisotropy of in718 fabricated by laser powder bed fusion |
| topic | Liquid-induced heat treatment Anisotropic property Nickel-based superalloy Laser powder bed fusion |
| url | http://www.sciencedirect.com/science/article/pii/S2772369024000707 |
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